[Tinyos-devel] more bugging about current consumption on MicaZ in tinyos-2.x

[Razvan Musaloiu-E.]

Hi!

On Tue, 18 Jul 2006, Philip Levis wrote:

> On Jul 18, 2006, at 12:07 AM, Joe Polastre wrote:
>
> > The ATMega128L used on the MicaZ has a very wide sleep current.  Some
> > customers have reported as low as 5uA sleep current while others have
> > reported as high as 50-500uA sleep current.  The processor uses a very
> > archaic design relative to the new ATMega's and the superior TI MSP430
> > processors.
>
> Interesting. Which low power state? I have 20 or so micazs hanging
> around my office; I'll try to test a bunch of them and gather some
> data. I also have some Teloi, so I can do the same for them.

I just tested some almost unused MicaZ motes and they show the expected
low power consumption (~2uA measured with the Extech). The one that shows
high consumption was used in a real deployment for several months. I also
tested 6 other motes from the same deployment and they also show a low
power consumption.

So it looks like some MicaZ consume significantly more even in Power Save
and Extended Standby. If would be interesting to know the any of the 20
you have also has this problem.

I apologize for bugging everyone on a problem that seams to be very
isolated.

-- 
Razvan ME